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Rohr, D. M.; Yochelson, E. L. (1990). An unusual new bellerophontacean gastropod from the Ordovician (Whiterockian) of Nevada. Journal of Paleontology. 64(6): 956-960.
Rohr, D. M.; Yochelson, E. L. (1990). An unusual new bellerophontacean gastropod from the Ordovician (Whiterockian) of Nevada. Journal of Paleontology. 64(6): 956-960.